End-gate for press-boxes.



Patented Feb. 6, 1900A;

r INVENTOR- @Muz@ BY ATTORNEYS (Application tiled July 11, 1899.)

D J SALTSMAH END GATE FUR PRESS BOXES.

Tn: Noam: Pcsns co. Fuero-Luna. wmmm'an. n c.

DANIEL J. SALTSMAN, OF MElWIPHIS, TENNESSEE.

END-GATE Foa PRESS-Boxes.

SPECIFICATION forming part of Letters Patent No. 642,724, dated February6, 1900.

Application filed July 1l., 1899-. Serial No. 723,444. (No model.)

l enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to improvements in apparatus employed forexpressing oil from seeds, such as cotton-seed, and from nuts, beans,peas, cereals, meat, and other oil-bearing substances; and myinventionconsistsin the novel compressible gates employed for closing thepress-boxes and in the novel means employed for supporting such gates.

In the extraction ot' oil from substances such as those above mentionedbypressure a series of press boxes or plates mounted one upon anotherwithin a suitable hydraulic or other press and arranged to telescope onewithin another when pressure is applied are employed. The meal, seeds,or pulp from which the oil is to be extracted is placed Within theseboxes before they are so pressed together, and in order that theoil-bearing substance may be prevented from escaping from the boxesthrough the openings therein through which the charge is introduced itis customary to wrap the charge for each box in cloths. The wrapping ofthe charges in this manner and the stripping of the cloths from the cakeremaining after the oil has been pressed out require considerable timeand labor, and therefore involve considerable expense. The cost of thepress-cloths is also a considerable item, since they are subjected toconsiderable strain and last but a short time. When press-cloths areused, the ends of the cakes taper at the openings in the press-boxes andso do not receive the same amount of pressure as the other parts of thecakes, and hence retain more oil than those portions of the cakes whichare exposed to the full pressure.

By the use of the end-gate for press-boxes herein illustrated anddescribed the use of press-cloths is avoided, with a consequentreduction in expense and greater convenience of operation, a brighterand softer cake is made, and the yield of oil is greater, because allportions of the cake are subjected to equal pressure.

The object of my invention is to avoid the expense, inconvenience, andloss due to the employment of press-cloths and to make the deviceemployed for retaining the oil-bearing substance in the press-boxes assimple, inexpensive, and effective as possible. This ob- 6o ject isattained in the invention herein described and illustrated in thedrawings Which accompany and form a part of this specification, in whichthe same reference-numerals indicate the same or corresponding parts,and in Which- Figure lis a frontelevation of an oil-press thepress-boxes of which are provided with my end-gates. Fig. 2 is avertical section of a series ot' press-boxes from front to rear,show 7oing the end-gates in place within the press-- boxes; and Fig. 3 is aView similar to Fig. l, showing another method of supporting theend-gates.

In the drawings, 1 is the press, and 2 2 the 75 press boxes, of ordinaryconstruction, arranged to telescope one within theother in the ordinarymanner and provided With mats 3 for supporting the cakes and withdrainagechannels 4. 8o

5 and 5' are the end-gates above mentioned. These gates are blocks ofrubber or other readily-compressible and elastic material of such sizethat they lit into the openings at the front and rear ofthe press-boxes.They are preferably from one-half to three-quarters of an inch shorterthan the openings in the press-boxes, so that opportunity for theexpansion of the gates longitudinally under pressure is afforded. Therear gates 9o 5 may be held in place by cleats or lugs 6, secured to thepress-boxes, as shown in Fig.

2, or formed integrally with the boxes. The front gates are preferablyhinged to the pressboxes, as shown in Fig. l, each gate being secured toa hinge-leaf 7, hinged to the box above; but as an alternative to thisconstruction arms 8, to which the front gates 5 are secured, as shown inFig. 3, may be mounted upon a vertical shaft 9 and held apart by roosprings 10, which permit the gates to ascend with the press-boxes whenpressure is applied,

but which support the gates about opposite their respective openingswhen pressure is removed and the gates are swung outward.

Instead of being hinged to the press-boxes or to a rod or shaft 9 thefront end-gates may be entirely separate from the apparatus, beingremoved and inserted as desired.

The manner of operating the apparatus is as follows: The boxes beingrelieved of pressure and open to the full extent, the front endgates 5are opened either by swinging them to one side, if they be supported asshown in Figs. l and 3, or by removing them altogether and a charge ofoil-bearing material placed in each press-box. This may be doneconveniently by employing a suitable shovel, upon which the charge foreach box may be placed. The shovel having been inserted in thepress-box, the corresponding end-gate may be closed over the shovel,which is then removed, leaving the charge within the box, the end-gatespreventing the escape of any7 portion of it. The boxes having beenfilled in this manner, pressure is applied in the customary manner andthe oil pressed out. The end-gates compress as the press-boxes telescopeinto each other, and thus do not intertere with the application ofpressure to the oil-bearing material in the boxes. The pressure upon theend-gates holds them in place. The oil having been pressed out, thepressure on the boxes is removed, the front end-gates opened, and thecakes remaining in the boxes are removed in any suitable manner, as bythe use ot' a shovel.

If desired, the boxes may be so constructed as to require no rearend-gates, being provided with end partitions, similar to the sidepieces of the boxes, which fit into each other in such manner as toprevent the escape of the material within the boxes.

I-Iaving thus completely described my invention, what I claim, anddesire to secure by Letters Patent, is-

1. The combination, with press-boxes arranged to tit one within theother, and each open at one end for the reception of a charge ofmaterial to be pressed, of end-gates of elastic and compressiblematerial adapted to tit into and close the said ends of the boxes, andto com press as said boxes are pressed together.

2. The combination, with press-boxes arranged to fit one Within theother, and each open at one end for the reception of a charge ofmaterial to be pressed, of rubber end-gates adapted to fit into andclose the said ends of the boxes and to compress as the boxes arepressed together.

3. The combination, with press-boxes arranged to fit one Within theother, and each open at one end for the reception of a charge ofmaterialto be pressed, of end-gates of elas tic and compressiblematerial, adapted to it into and close the said ends of the boxes, andto compress as said boxes are pressed together, and swinging supportsfor said end-gates.

. 4. The combination, with press-boxes arranged to tit one Within theother, and each open at one end for the reception of a charge ofmaterial to be pressed, of end-gates of elastic and compressiblematerial, adapted to it into and close the said ends of the boxes, andto compress as said boxes are pressed together, and hinged supports forsaid end-gates, secured to the boxes.

5. The' combination, with press-boxes arranged to fit one within theother, and open at the ends for the reception of a charge of material tobe pressed, of end-gates of elastic and compressible material adapted tofit into and close both front and rear openings in the boxes, and tocompress as said boxes are pressed together.

6. An end-gate for closing openings in telescoping press-boxes,consisting of a block of rubber or other elastic and compressiblematerial, adapted to iit into and close au opening in a press-box, andto compress as said boxes are pressed together, thereby permitting theapplication of pressure to the contents of the boxes.

In testimony whereof I have hereunto afiixed my signature in thepresence of two witnesses.

DANIEL J. SALTSMAN. iVitnesses:

GUY W. MOORE, GEORGE Wins'roN.

